"Shadowhunters: The Mortal Instruments" star Harry Shum Jr., is filming the Season 3 finale.
Shum posted a picture on Instagram of himself in costume as Magnus. Crew members can be seen in the background, including one person directly behind Shum.
"Filming the Finale (with a head growing out of my neck) @shadowhunterstv," the star captioned the post.
Freeform canceled "Shadowhunters" in June, but ordered two extra episodes to conclude the series.
"Believe me we are as shocked as you," Katherine McNamara, who portrays Clarissa "Clary Fray" Fairchild, tweeted after the cancellation was announced.
"Truly, this show has been a treasure. I fell in love with this story and its mythology instantly."
"Shadowhunters" co-stars Dominic Sherwood, Alberto Rosende, Matthew Daddario, Emeraude Toubia, Isaiah Mustafa and Alisha Wainwright.
Fans remain hopeful the series will be picked up elsewhere, although Netflix told Deadline last week it has no plans to do so.